Best N54 Tuner

Rob09msport

Captain
Oct 28, 2017
1,152
Monroe CT
Gauge hi jacking , on the fly adjustment. Honestly unless going single or pi it really isn't a big help . It adds complexity but also some features. It can make it easier for the user to dial in but if getting custom tune it don't matter. Used be only way for flex fuel to but that's no longer the case
 

Twisted Tuning

Lieutenant
Platinum Vendor
Oct 25, 2016
844
New York
So what are the pro s and con s of jb4 stacked setup compared to mhd only ?
pro for a jb4, in my eyes, is just being able to change boost target. but thats not important to me at all. so for me, all the pros go to the factory dme.


Gauge hi jacking , on the fly adjustment. Honestly unless going single or pi it really isn't a big help . It adds complexity but also some features. It can make it easier for the user to dial in but if getting custom tune it don't matter. Used be only way for flex fuel to but that's no longer the case

altering the rail pressure is not real flex fuel imo. and is why you need a dme flash to get it to work ok with jb4. unless im missing something but the "flex fuel wires" just hooked to the rail lpressure sensor.
 
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Rob09msport

Captain
Oct 28, 2017
1,152
Monroe CT
Jb4 had virtual flex fuel logic but it also had the ability to use a sensor and you could use auto tuning. It is a very safe way to get a decent custom tune experience without getting a custom tune done. It is a Jack of all trades master of none. For a DIY guy it's great to dumb down meth and pi or single turbo tuning.
 

GreyNBlueE92

Specialist
Oct 3, 2018
80
OH
I like being able to change boost target and set up map 6 on my phone, but the logging isn't the greatest imo.

Always wondering if a dialed in map 6 and modified bef can be as good as factory dme...
 
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